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    精英家教网 > 高中英语 > 题目详情
    Science and technology have __________ in important ways to the improvement of agricutural production.
    A．attachedB．assistedC．contributedD．witnessed
    C

    试题分析：句意：科学技术在提高农产品的产量上作出了重要的贡献。attach …to 把… …附加在……上；assist帮助；contribute…to作贡献于；witness见证。故选C。
    考点：考查名词在语境中的应用辨析。
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